1-3 second lags

So this started like last week where i get these small lags when my pc freezes for like 1-3 seconds. It can happen when i play games or just browsing. It happens probably like 2 times every hour. This is a problem for me because when i play csgo and im shooting towards someone and everything just lags and i die. It's a small problem but it is really frustrating.
I have been googling for solutions but i haven't found anyone yet.

Specs:
Nvidia gtx 760 2gb
i5-4460 3.2 GHz
Seagate SSHD 1TB
500W Corsair

nah like everything just lags, the sound the mouse everything, i dont really know what it is

and no that option is disabled

or nvm it was set to 20 min, i set it to Never

it didnt help, but when i played Arma 3 today my pc just totally freezed and i had to restard it by holding down the button on the pc.
Could this be a graphics card problem? i did a RAM diagnostic search for problems but it didnt find any.

Hi, first stop after that sort of thing would be to check your event log (event viewer) - there are some freeware tools around that might help to list crashes.

After that, and assuming no hardware problem, basic checks like chkdsk and sfc /scannow, which it's worth doing to avoid wasting time on other investigations.

After that, create a simpler environment- process of elimination - try to establish a situation where you're not experiencing these problems. E.g. try a clean boot.